clegg



scribed wheteby the glass is' secured to page over the matter to be read. I

preseneeiof two' witnesses. I I

s ze -zm (No Model.)

W. E. GLEGG.

2 sheets-sheen 1.

MEANS FOR PROTECTING EYESIGHT.

Patented Aug. 1

II I I I X163 I I I II1 I III IIII IHI II I The hefeih-deseribed device fer prodiiein gi a. colored tint; or shade upon"reading-naamtevj.

printed; 01' engrossed upon white papelywhich consists .of a coloredjtransparency provided with holdingv devices, substantially as d'e-Is :In testimonywhereof I affix signaturein n. rum. memo-mm viam n. c. w. 3

v (No ModeL) 2 Sheets-Sheet 2. r W. E. GLEGG.

MEANS FOR PROTECTING EYESIGHT.

No. 303,559. Patented Aug. 12, 1884.

.Z'hventoz'.

I I and papers.

- Defective Eye-Sight in the Popular Scibe referred to. To remedy these evils, as far centage of defective eye-sight varying from ten 1 to eighty five.

\VILLIAM E. CLEGG, OF WASHINGTON, DISTRICT OF- COLUMBIA.

MEANS FOR' PROTECTING EYE-steer.

QPECIPICATION forming part of Letters Patent No. 303,559. dated August 12, 18841 Application filed February 26, 1584. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM E. OLEGG, a citizen of the United States, residing at WVashi-ngton, in the District of Columbia, have invented certain new and useful Improvements in Devices for Improving Eye-Sight; and I do hereby declare the following to be a full, clear, and exact description of the'invention, such as will enable others skilled in the artto which it appertains to make and use the same.

Figure 1 represents a plan view of a device to which my invention has been applied. Fig. 2 is a similar View of a modified plan in which I intendcarrying out my invention. Figs. 3 and 4. represent still another modification of my improvement, Fig. 3 being a plan and Fig. 4. being an edge view, partly in section. Fig. 5 shows a detail view of still another modification. I

My invention relates to devices for preserving the eye-sight in the reading of books and papers. I

In the published reports of scientific bodies in this and other countries regarding defective eye-sight among adults and children, the proportion of people affected has been shown to be largely on the increase. In Germany special examinations have been made in the various educational institutions, which give the per- Similar examinations have been held in the schools of France and England with like results. The same results have been deduced from examinations and reports in this country. The 'causes which lead to this deterioration of eye-sight have been found to be most largely due among reading people to the colors entering into'the printing of books White paper'and black inkv are tending tornin the human eye-sight. The eye cannot long sustain,without injury to a greater or less extent, the broad glare of a white surface. In support of these facts the article on ence Monthly, volume xxiv, page 357, may

as the perusal of books and papers are coneerned, is the object of my invention.

The invention consists in the interposition of a colored transparencyrheldin position by. suitable holding devices for attaching it to the printed page when it consists of white paper,

.dispensed with.

also to keep one or more transparencies, B, 65..

in position. This is eifected by securing to M both the holder and the transparency a cord, 0. This cord is preferably attached to a corner of the transparency in such manner as to bring the transparency over thepage and against the binding side of the book when. the latteris laid open in the holder and the cord is brought under tension. I

D is a shade of some colored paper or cardboard, attached, in the same manner as the 7 transparency, by-a cord, 0; but Imay use a transparency in its place, if desired.'

Fig. 2 shows the holder provided with raised projections E, to WhlCh'lJhB transparencies are hinged, so as to fold over the printed page. F is a ledge formed on the lower edge of the holder to support the book, but it may be In Figs. 3 and 4 a single transparency is I shown, having attached to its upper edge, by rivets or other suitable fastenings, a clip, G. I This clip is provided with an edge, 9, arranged I in the sameplane or direction as the transparency, and is adapted to be applied to-any book by inserting the edge between the leaves of the book back of the page to be read. A

distance is left between the edge 9 and the glass Bsufiicient toallow the interposition of" a number of leaves, so as to provide a firm bearing for the clip.. It will be understood 5 that these transparencies may be made of any size .or shape suitable for the purpose, and that glass, mica, or any other transparent medium, appropriately colored,.'-may be em- I ployed. I .1oo

Fig. 5 exhibits niy improved transparencydesigned as a convenient form for pocket use;

It consists of the glass B, havinga ledge, H, I, in which the glass is secured: I is ahandle 1 r so hinged 'to the ledge or frame that it can be 1 derstood as claiming such spectacles of colored folded alongside the frame out of the way when desired to be put in the pocket or stowedaway.

My improvement is distinguished from colored-spectacles or goggles. When colored spectacles are worn everything observed takes on the color of the spectacles, which is very objectionable to the wearer, except in pronounced cases of weak eyes, which will not bear the direct light. In my invention Iprovide simply a colored printed page of some soft tint where a glaring white existed before. Common plane colored glass used in spectacles also has a tendency to injure the eye by being worn so near the eye as to catch all the varied reflections of the glass and project them upon the pupil. I do not therefore wish to be unglass.-

What I do claim, and desire to secure by 2 Letters Patent, is

The herein-described device for producing a colored tint or shade upon reading matter printed or engrossed upon white paper,which consists of a colored transparency provided with holding devices, substantially as .described, whereby the glass is secured to the page over the matter to be read.

In testimony whereof I afiix my signature in presence of two witnesses. i

' WILLIAM E. OLEGG.

Witnesses:

F. B. RRocK, H. A. HALL. 

